– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 am Wed 14 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Wed 14 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummarySome drizzle, heaviest during Fri night. Warm (max 21°C on Thu afternoon, min 11°C on Wed morning). Wind will be generally light. | Days 4–6 Weather SummaryModerate rain (total 11mm), heaviest on Sat morning. Very mild (max 12°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light. | |||||||||||||||||
Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | | |  | | | |  |  |  | | | | |
rain shwrs | rain shwrs | clear | clear | clear | clear | clear | clear | rain shwrs | rain shwrs | rain shwrs | clear | some clouds | cloudy | some clouds | cloudy | some clouds | some clouds | |
Cloud base (m) | 600 | 950 | 8900 | 9600 | 8600 | 2950 | 750 | 900 | 1700 | 6350 | 5400 | 4800 | 6750 | 6300 | 5650 | |||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | 0.1 | — | — | — | — | — | — | 1.4 | 11 | 0.5 | — | — | — | — | — | — | — |
max °C | 13 | 15 | 12 | 18 | 21 | 16 | 20 | 21 | 15 | 10 | 9 | 7 | 10 | 12 | 10 | 10 | 11 | 8 |
min °C | 11 | 15 | 12 | 12 | 20 | 15 | 16 | 19 | 11 | 9 | 9 | 6 | 6 | 11 | 9 | 8 | 10 | 7 |
chill °C | 11 | 15 | 12 | 12 | 20 | 15 | 16 | 19 | 10 | 7 | 8 | 6 | 5 | 11 | 9 | 8 | 10 | 7 |
Freezing level m | 3400 | 3550 | 3850 | 3900 | 3850 | 3850 | 3800 | 3550 | 2950 | 1750 | 1700 | 1700 | 2150 | 2350 | 2250 | 2100 | 2000 | 1950 |
 | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:33 | — | — |
 | — | 6:21 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:10 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Fri night. Warm (max 21°C on Thu afternoon, min 11°C on Wed morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 11mm), heaviest on Sat morning. Very mild (max 12°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
SHIP2120 | |||||
Skagit Burlingto / t Vernon Airport |  | ||||
SHIP7503 | |||||
SHIP4179 | |||||
SHIP5178 | |||||
SHIP6677 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.